--- title: "Brad Slavin - AutoSPF" description: "Founder and General Manager of DuoCircle. Product strategy and commercial lead for AutoSPF" image: "https://autospf.com/images/og-default.png" canonical: "https://autospf.com/authors/brad-slavin/" --- ![Brad Slavin](https://media.mailhop.org/autospf/images/authors/brad-slavin.jpg) # Brad Slavin General Manager [LinkedIn →](https://www.linkedin.com/in/bradslavin) Brad Slavin is the founder and General Manager of DuoCircle, the company behind AutoSPF, DMARC Report, Phish Protection, and Mailhop. He founded DuoCircle in 2014 to solve the SPF 10-DNS-lookup problem at scale and has led the company's growth to 2,000+ customers. Brad's focus is product strategy, customer relationships, and the commercial and compliance side of email authentication (DPAs, SLAs, enterprise procurement) rather than hands-on DNS engineering. ## Areas of Expertise Email Security StrategySaaS Product ManagementEnterprise ComplianceCustomer SuccessEmail Deliverability Business ## Credentials - Founder and General Manager of DuoCircle LLC (founded 2014) - Built AutoSPF into a 2,000+ customer SaaS business - Leads commercial strategy across DuoCircle's email security product family ## Articles by Brad Slavin [ SPF Softfail Troubleshooting: Domain Does Not Designate Permitted Sender Hosts June 4, 2026 ](/blog/spf-softfail-troubleshooting-domain-does-not-designate-permitted-sender-hosts/)[ How To Set Up SPF Authentication For Mailhostbox And Endurance International Emails June 3, 2026 ](/blog/how-to-set-up-spf-authentication-for-mailhostbox-and-endurance-international-emails/)[ How can I fix common SPF errors that cause Office 365 emails to be marked as spam? June 2, 2026 ](/blog/how-can-i-fix-common-spf-errors-that-cause-office-365-emails-to-be-marked-as-spam/)[ What Is ADSP? Understanding Author Domain Signing Practices in DKIM June 2, 2026 ](/blog/what-is-adsp-understanding-author-domain-signing-practices-in-dkim/)[ Fix No SPF Record Issues And Improve Email Authentication In 5 Steps June 1, 2026 ](/blog/fix-no-spf-record-issues-and-improve-email-authentication-in-5-steps/)[ How An SPF Validator Supports DKIM And DMARC Alignment May 29, 2026 ](/blog/how-an-spf-validator-supports-dkim-and-dmarc-alignment/)[ How to Configure SPF for Stackmail May 27, 2026 ](/blog/how-to-configure-spf-for-stackmail/)[ Understanding DMARC ASPF Tag And Its Parameters: What Does “r” Mean? May 27, 2026 ](/blog/understanding-dmarc-aspf-tag-and-its-parameters-what-does-r-mean/)[ Understanding DMARC ASPF Tag And Its Parameters: What Does “r” Mean? May 27, 2026 ](/blog/understanding-dmarc-aspf-tag-parameters-what-does-r-mean/)[ Anti-Spoofing Solutions: Protecting Your Business from Email Impersonation May 26, 2026 ](/blog/anti-spoofing-solutions-protecting-your-business-from-email-impersonation/) ```json {"@context":"https://schema.org","@type":"Organization","name":"AutoSPF","url":"https://autospf.com","logo":{"@type":"ImageObject","url":"https://autospf.com/images/autospf-logo.png"},"description":"Automatic SPF flattening and email authentication management. Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains.","parentOrganization":{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138883901","name":"DuoCircle LLC","url":"https://www.duocircle.com","sameAs":["https://www.wikidata.org/wiki/Q138883901","https://www.crunchbase.com/organization/duocircle-llc","https://www.linkedin.com/company/duocircle","https://github.com/duocircle"],"subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]}} ``` ```json {"@context":"https://schema.org","@type":"WebSite","name":"AutoSPF","url":"https://autospf.com","description":"Automatic SPF flattening and email authentication management. Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains.","publisher":{"@type":"Organization","name":"AutoSPF","url":"https://autospf.com","logo":{"@type":"ImageObject","url":"https://autospf.com/images/autospf-logo.png"},"description":"Automatic SPF flattening and email authentication management. 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